tonydude
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2016.04 LP EQ Question
The new LP EQ looks really interesting, I am curious how it compares to the Quad Curve EQ.
What are the differences and what are the best scenario's to use the each EQ?
~ Tony
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S.L.I.P.
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Re: 2016.04 LP EQ Question
2016/04/28 17:52:06
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tonydude
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Re: 2016.04 LP EQ Question
2016/04/29 02:55:42
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The video is a good tutorial of the LP EQ only.
How does it compare with the Quad Curve EQ though? E.g. is the Quad Curve better for tracks, does it colour the sound more etc?
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Bristol_Jonesey
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Re: 2016.04 LP EQ Question
2016/04/29 03:53:02
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Quad Curve is Minimum Phase
LP is Linear Phase
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JoeHans
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Re: 2016.04 LP EQ Question
2016/04/29 06:37:41
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Haven't tried LP EQ yet but man.. it looks really user friendly and advanced ad the same time.
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Chregg
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Re: 2016.04 LP EQ Question
2016/04/29 07:10:30
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Bristol_Jonesey
Quad Curve is Minimum Phase
LP is Linear Phase
I think non linear setting is minimum phase
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stevec
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Re: 2016.04 LP EQ Question
2016/04/29 18:39:00
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Chregg
Bristol_Jonesey
Quad Curve is Minimum Phase
LP is Linear Phase
I think non linear setting is minimum phase
Correct - the LP can do both. And the UI is really slick... Some advantages of the QC EQ are that its available in the Pro Channel, has three different sizes available (as well as the TI/CV display without needing to open the UI), and includes the four predefined Q/level styles (G, E, Pure and Hybrid).
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Bristol_Jonesey
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Re: 2016.04 LP EQ Question
2016/04/30 02:20:19
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True, but I don't think I'd use the LP on tracks - the QC is more than capable for basic mixing and will cause much less of a CPU hit than the LP which was the OP's original question
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Chregg
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Re: 2016.04 LP EQ Question
2016/04/30 04:07:18
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i think on the non linear setting, the cpu hit isnt bad at all, havent tried enuff instances yet of the lp on non linear setting to say tbh
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tonydude
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Re: 2016.04 LP EQ Question
2016/05/01 07:23:16
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ramscapri
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Re: 2016.04 LP EQ Question
2016/05/01 09:06:32
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Talking of comparison between the Prochannel Quadcurve EQ and the new LP EQ, I couldn't resist highlighting my below observations, though they could be considered very minor or insignificant for many :
1. The PC QC EQ has a meter range upto -72 dB at the lower end whereas the LP EQ is at -60 dB minimum (or am I missing something ?)
2. The PC QC EQ has an amplitude display range of -18 to +18 dB. LP EQ is restricted to -12 to +12 dB (or am I missing something ? Can this be modified ?)
3. The PC QC EQ has a very useful frequency and gain indicator at the bottom right of the graph based on where the mouse is positioned when hovering over the graph. This useful feature seems to be missing in the LP EQ (or am I missing something ? Is there a setting for this ?)
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Anderton
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Re: 2016.04 LP EQ Question
2016/05/01 12:21:29
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The QuadCurve emulates analog EQ. Phase shifts in analog EQ are what gives its "sound," as these shifts cause amplitude changes above and beyond whatever you're boosting or cutting. The four curves (which to me are what make this EQ so invaluable) emulate the way different analog EQs work. For example, there are two curves that emulate SSL EQs, and another that emulates a Pultec-type response. These different phase shifts and amplitude changes account for the various "colors" of analog EQ.
Linear Phase EQ does not create these kinds of amplitude changes. This is why it often seems like adding a lot of boost with a linear phase EQ doesn't produce as obvious a difference as using "analog" EQ. LP is exceptionally good at EQing high frequencies. At lower frequencies, with some signal sources under some conditions there can be a phenomenon known as "pre-ringing," but this is generally not noticeable.
LP operation is also a big advantage with multiband compression or using a multiband as a crossover, because when the signals from the various bands are re-combined, their phase relationship is correct. However (to oversimplify) you need time delays to make sure these all line up, which accounts for the extra latency.
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ramscapri
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Re: 2016.04 LP EQ Question
2016/05/01 14:19:33
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Thanks for those really useful notes Craig, though it will take a while for someone like me to appreciate the science of it.  Guess will have to do some more reading to comprehend the practical application of LP plugins. But I did realize that using these new LP plugins on a final mix audio track does provide a strong platform to tweak the frequency spectrum to taste, in particular, as you explained, where over-emphasis of amplitude changes is undesirable, which is taken care of by the LP mode. Where it gets more interesting is when you need a different treatment for the same band at different parts of the song including a case where you need to treat a band in the L-R mode in one part of the song and in the M-S mode in another part. That is when I guess automation of the parameters could help. I am yet to check though if the change of mode from L-R to M-S can be automated. I just wish the bakers could do an update to both the LP plugins to introduce an indicator for frequency/gain at mouse point similar to what we have in the Prochannel Quadcurve EQ. This really helps to quickly identify the values and regions within the frequency spectrum analyzer.
post edited by ramscapri - 2016/05/01 14:45:05
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mcstringer413
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Re: 2016.04 LP EQ Question
2016/05/01 14:44:21
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ramscapri
2. The PC QC EQ has an amplitude display range of -18 to +18 dB. LP EQ is restricted to -12 to +12 dB (or am I missing something ? Can this be modified ?)
With the LP EQ in the upper left corner of the graph there are choices for amplitude range; 6 db, 12 db, or 30 db. Just click on the one you want to use.
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ramscapri
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Re: 2016.04 LP EQ Question
2016/05/01 15:11:49
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mcstringer413
ramscapri
2. The PC QC EQ has an amplitude display range of -18 to +18 dB. LP EQ is restricted to -12 to +12 dB (or am I missing something ? Can this be modified ?)
With the LP EQ in the upper left corner of the graph there are choices for amplitude range; 6 db, 12 db, or 30 db. Just click on the one you want to use.
Oh yes ! Silly me missed that one. Thanks mcstringer413.
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